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  2. DWM.exe process consumes excessive CPU resources after a lock screen display time-out occurs

DWM.exe process consumes excessive CPU resources after a lock screen display time-out occurs

View products that this article applies to.

Symptoms

You have a computer that's running Windows 8 or Windows Server 2012. At the lock screen, and after a display time-out occurs, the DWM.exe process consumes a high percentage of CPU resources. This excessive CPU usage continues until you move the mouse pointer or touch the keyboard.

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Resolution

Hotfix information

A supported hotfix is available from Microsoft Support. However, this hotfix is intended to correct only the problem that is described in this article. Apply this hotfix only to systems that are experiencing the problem described in this article. This hotfix might receive additional testing. Therefore, if you are not severely affected by this problem, we recommend that you wait for the next software update that contains this hotfix.

If the hotfix is available for download, there is a "Hotfix download available" section at the top of this Knowledge Base article. If this section does not appear, contact Microsoft Customer Service and Support to obtain the hotfix.

Note If additional issues occur or if any troubleshooting is required, you might have to create a separate service request. The usual support costs will apply to additional support questions and issues that do not qualify for this specific hotfix. For a complete list of Microsoft Customer Service and Support telephone numbers or to create a separate service request, go to the following Microsoft website:
http://support.microsoft.com/contactus/?ws=support
Note The "Hotfix download available" form displays the languages for which the hotfix is available. If you do not see your language, it is because a hotfix is not available for that language.

Prerequisites

To apply this hotfix, you must be running Windows 8 or Windows Server 2012.



Restart requirement

You must restart the computer after you apply this hotfix.

Hotfix replacement information

This hotfix does not replace any previously released hotfix.

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File information
The English (United States) version of this hotfix installs files that have the attributes that are listed in the following tables. The dates and the times for these files are listed in Coordinated Universal Time (UTC). The dates and the times for these files on your local computer are displayed in your local time together with your current daylight saving time (DST) bias. Additionally, the dates and the times may change when you perform certain operations on the files.

Windows 8 and Windows Server 2012 file information and notes

Important Windows 8 and Windows Server 2012 hotfixes are included in the same packages. However, only "Windows 8" is listed on the Hotfix Request page. To request the hotfix package that applies to one or both operating systems, select the hotfix that is listed under "Windows 8" on the page. Always refer to the "Applies To" section in articles to determine the actual operating system that each hotfix applies to.
  • The files that apply to a specific product, milestone (RTM, SPn), and service branch (LDR, GDR) can be identified by examining the file version numbers as shown in the following table.

    VersionProductMilestoneService branch
    6.2.920 0.16 xxxWindows 8 and Windows Server 2012RTMGDR
    6.2.920 0.20 xxxWindows 8 and Windows Server 2012RTMLDR
    6.2.920 0.21 xxxWindows 8 and Windows Server 2012RTMLDR
  • The MANIFEST files (.manifest) and the MUM files (.mum) that are installed for each environment are listed separately in the "Additional file information for Windows 8 and Windows Server 2012" section. MUM and MANIFEST files, and the associated security catalog (.cat) files, are extremely important to maintain the state of the updated components. The security catalog files, for which the attributes are not listed, are signed with a Microsoft digital signature.
For all supported x86-based versions of Windows 8
File nameFile versionFile sizeDateTimePlatform
Dwmcore.dll6.2.9200.210071,840,64005-Apr-201404:05x86
Microsoft-windows-desktopwindowmanager-compositor.ptxmlNot Applicable2,39211-Oct-201200:39Not Applicable
Dxgi.dll6.2.9200.21007366,08005-Apr-201404:05x86
Cdd.dll6.2.9200.16384166,40026-Jul-201203:30x86
Dxgkrnl.sys6.2.9200.210071,228,63205-Apr-201404:22x86
Dxgmms1.sys6.2.9200.20604259,81610-Jan-201305:52x86
Lddmcore.ptxmlNot Applicable1,15125-Jul-201220:32Not Applicable
For all supported x64-based versions of Windows 8 and of Windows Server 2012
File nameFile versionFile sizeDateTimePlatform
Dwmcore.dll6.2.9200.210072,205,69605-Apr-201404:31x64
Microsoft-windows-desktopwindowmanager-compositor.ptxmlNot Applicable2,39211-Oct-201200:37Not Applicable
Dxgi.dll6.2.9200.21007459,26405-Apr-201404:31x64
Cdd.dll6.2.9200.20828199,68019-Sep-201307:44x64
Dxgkrnl.sys6.2.9200.210071,445,20805-Apr-201407:12x64
Dxgmms1.sys6.2.9200.20604303,84810-Jan-201307:35x64
Lddmcore.ptxmlNot Applicable1,15125-Jul-201220:29Not Applicable
Dwmcore.dll6.2.9200.210071,840,64005-Apr-201404:05x86
Microsoft-windows-desktopwindowmanager-compositor.ptxmlNot Applicable2,39211-Oct-201200:39Not Applicable
Dxgi.dll6.2.9200.21007366,08005-Apr-201404:05x86

Additional file information

Additional file information for Windows 8 and for Windows Server 2012

Additional files for all supported x86-based versions of Windows 8
File namePackage_1_for_kb2957979~31bf3856ad364e35~x86~~6.2.1.0.mum
File versionNot Applicable
File size1,812
Date (UTC)06-Apr-2014
Time (UTC)18:06
PlatformNot Applicable
File namePackage_2_for_kb2957979~31bf3856ad364e35~x86~~6.2.1.0.mum
File versionNot Applicable
File size1,795
Date (UTC)06-Apr-2014
Time (UTC)18:06
PlatformNot Applicable
File namePackage_3_for_kb2957979~31bf3856ad364e35~x86~~6.2.1.0.mum
File versionNot Applicable
File size3,179
Date (UTC)06-Apr-2014
Time (UTC)18:06
PlatformNot Applicable
File namePackage_4_for_kb2957979~31bf3856ad364e35~x86~~6.2.1.0.mum
File versionNot Applicable
File size1,812
Date (UTC)06-Apr-2014
Time (UTC)18:06
PlatformNot Applicable
File namePackage_5_for_kb2957979~31bf3856ad364e35~x86~~6.2.1.0.mum
File versionNot Applicable
File size1,830
Date (UTC)06-Apr-2014
Time (UTC)18:06
PlatformNot Applicable
File namePackage_6_for_kb2957979~31bf3856ad364e35~x86~~6.2.1.0.mum
File versionNot Applicable
File size1,823
Date (UTC)06-Apr-2014
Time (UTC)18:06
PlatformNot Applicable
File namePackage_for_kb2957979_rtm~31bf3856ad364e35~x86~~6.2.1.0.mum
File versionNot Applicable
File size3,860
Date (UTC)06-Apr-2014
Time (UTC)18:06
PlatformNot Applicable
File nameX86_3b6531107d38e39f82ac895af736c9c4_31bf3856ad364e35_6.2.9200.21007_none_faefaaa987162924.manifest
File versionNot Applicable
File size696
Date (UTC)06-Apr-2014
Time (UTC)18:06
PlatformNot Applicable
File nameX86_4cd7063ec005a3ebbf575f996ce28319_31bf3856ad364e35_6.2.9200.21007_none_6372ceeb28cbdb27.manifest
File versionNot Applicable
File size700
Date (UTC)06-Apr-2014
Time (UTC)18:06
PlatformNot Applicable
File nameX86_d452fda6bf4e75138512a3b13c84ef62_31bf3856ad364e35_6.2.9200.21007_none_7fdf112dcfacdc3d.manifest
File versionNot Applicable
File size719
Date (UTC)06-Apr-2014
Time (UTC)18:06
PlatformNot Applicable
File nameX86_microsoft-windows-d..wmanager-compositor_31bf3856ad364e35_6.2.9200.21007_none_03105d81299ee48a.manifest
File versionNot Applicable
File size116,655
Date (UTC)05-Apr-2014
Time (UTC)04:39
PlatformNot Applicable
File nameX86_microsoft-windows-directx-dxgi_31bf3856ad364e35_6.2.9200.21007_none_380c82dd08cdafd5.manifest
File versionNot Applicable
File size90,010
Date (UTC)05-Apr-2014
Time (UTC)04:39
PlatformNot Applicable
File nameX86_microsoft-windows-lddmcore_31bf3856ad364e35_6.2.9200.21007_none_a956a328cdcdbb89.manifest
File versionNot Applicable
File size283,125
Date (UTC)06-Apr-2014
Time (UTC)18:06
PlatformNot Applicable
Additional files for all supported x64-based versions of Windows 8 and of Windows Server 2012
File nameAmd64_4cd7063ec005a3ebbf575f996ce28319_31bf3856ad364e35_6.2.9200.21007_none_bf916a6ee1294c5d.manifest
File versionNot Applicable
File size702
Date (UTC)06-Apr-2014
Time (UTC)18:28
PlatformNot Applicable
File nameAmd64_511dddaf565353f8514aeef5112f0d39_31bf3856ad364e35_6.2.9200.21007_none_cc045a2249441cb1.manifest
File versionNot Applicable
File size1,048
Date (UTC)06-Apr-2014
Time (UTC)18:28
PlatformNot Applicable
File nameAmd64_5522c8fe922a16778cdef764bcba1573_31bf3856ad364e35_6.2.9200.21007_none_4f29b0df5156aa5a.manifest
File versionNot Applicable
File size700
Date (UTC)06-Apr-2014
Time (UTC)18:28
PlatformNot Applicable
File nameAmd64_5f08b5533fef08b4a3a7dcc2306afe29_31bf3856ad364e35_6.2.9200.21007_none_516f5530ee67b320.manifest
File versionNot Applicable
File size1,086
Date (UTC)06-Apr-2014
Time (UTC)18:28
PlatformNot Applicable
File nameAmd64_fdd8423515409380c2f9b813998f76cf_31bf3856ad364e35_6.2.9200.21007_none_677d24a07c8f98c8.manifest
File versionNot Applicable
File size704
Date (UTC)06-Apr-2014
Time (UTC)18:28
PlatformNot Applicable
File nameAmd64_microsoft-windows-d..wmanager-compositor_31bf3856ad364e35_6.2.9200.21007_none_5f2ef904e1fc55c0.manifest
File versionNot Applicable
File size116,659
Date (UTC)05-Apr-2014
Time (UTC)07:14
PlatformNot Applicable
File nameAmd64_microsoft-windows-directx-dxgi_31bf3856ad364e35_6.2.9200.21007_none_942b1e60c12b210b.manifest
File versionNot Applicable
File size90,012
Date (UTC)05-Apr-2014
Time (UTC)07:15
PlatformNot Applicable
File nameAmd64_microsoft-windows-lddmcore_31bf3856ad364e35_6.2.9200.21007_none_05753eac862b2cbf.manifest
File versionNot Applicable
File size283,129
Date (UTC)06-Apr-2014
Time (UTC)18:28
PlatformNot Applicable
File namePackage_1_for_kb2957979~31bf3856ad364e35~amd64~~6.2.1.0.mum
File versionNot Applicable
File size1,822
Date (UTC)06-Apr-2014
Time (UTC)18:28
PlatformNot Applicable
File namePackage_2_for_kb2957979~31bf3856ad364e35~amd64~~6.2.1.0.mum
File versionNot Applicable
File size1,805
Date (UTC)06-Apr-2014
Time (UTC)18:28
PlatformNot Applicable
File namePackage_3_for_kb2957979~31bf3856ad364e35~amd64~~6.2.1.0.mum
File versionNot Applicable
File size2,483
Date (UTC)06-Apr-2014
Time (UTC)18:28
PlatformNot Applicable
File namePackage_4_for_kb2957979~31bf3856ad364e35~amd64~~6.2.1.0.mum
File versionNot Applicable
File size2,284
Date (UTC)06-Apr-2014
Time (UTC)18:28
PlatformNot Applicable
File namePackage_5_for_kb2957979~31bf3856ad364e35~amd64~~6.2.1.0.mum
File versionNot Applicable
File size2,282
Date (UTC)06-Apr-2014
Time (UTC)18:28
PlatformNot Applicable
File namePackage_6_for_kb2957979~31bf3856ad364e35~amd64~~6.2.1.0.mum
File versionNot Applicable
File size2,319
Date (UTC)06-Apr-2014
Time (UTC)18:28
PlatformNot Applicable
File namePackage_7_for_kb2957979~31bf3856ad364e35~amd64~~6.2.1.0.mum
File versionNot Applicable
File size2,040
Date (UTC)06-Apr-2014
Time (UTC)18:28
PlatformNot Applicable
File namePackage_8_for_kb2957979~31bf3856ad364e35~amd64~~6.2.1.0.mum
File versionNot Applicable
File size2,077
Date (UTC)06-Apr-2014
Time (UTC)18:28
PlatformNot Applicable
File namePackage_9_for_kb2957979~31bf3856ad364e35~amd64~~6.2.1.0.mum
File versionNot Applicable
File size1,833
Date (UTC)06-Apr-2014
Time (UTC)18:28
PlatformNot Applicable
File namePackage_for_kb2957979_rtm~31bf3856ad364e35~amd64~~6.2.1.0.mum
File versionNot Applicable
File size5,827
Date (UTC)06-Apr-2014
Time (UTC)18:28
PlatformNot Applicable
File nameX86_microsoft-windows-d..wmanager-compositor_31bf3856ad364e35_6.2.9200.21007_none_03105d81299ee48a.manifest
File versionNot Applicable
File size116,655
Date (UTC)05-Apr-2014
Time (UTC)04:39
PlatformNot Applicable
File nameX86_microsoft-windows-directx-dxgi_31bf3856ad364e35_6.2.9200.21007_none_380c82dd08cdafd5.manifest
File versionNot Applicable
File size90,010
Date (UTC)05-Apr-2014
Time (UTC)04:39
PlatformNot Applicable

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Status

Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.

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References

Learn about the terminology that Microsoft uses to describe software updates.

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Keywords: kb, kbautohotfix, kbqfe, kbhotfixserver, kbfix, kbexpertiseinter, kbsurveynew, kbbug

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Article Info
Article ID : 2957979
Revision : 1
Created on : 1/7/2017
Published on : 5/13/2014
Exists online : False
Views : 192